3831389 has 4 divisors (see below), whose sum is σ = 3837756. Its totient is φ = 3825024.

The previous prime is 3831379. The next prime is 3831413. The reversal of 3831389 is 9831383.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 828100 + 3003289 = 910^2 + 1733^2 .

It is a cyclic number.

It is not a de Polignac number, because 3831389 - 2¹² = 3827293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3831319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2174 + ... + 3519.

It is an arithmetic number, because the mean of its divisors is an integer number (959439).

Almost surely, 2^3831389 is an apocalyptic number.

It is an amenable number.

3831389 is a deficient number, since it is larger than the sum of its proper divisors (6367).

3831389 is an equidigital number, since it uses as much as digits as its factorization.

3831389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6366.

The product of its digits is 15552, while the sum is 35.

The square root of 3831389 is about 1957.3934198316. The cubic root of 3831389 is about 156.4775662196.

The spelling of 3831389 in words is "three million, eight hundred thirty-one thousand, three hundred eighty-nine".